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1 /* v3_utl.c */ | |
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
3 * project. | |
4 */ | |
5 /* ==================================================================== | |
6 * Copyright (c) 1999-2003 The OpenSSL Project. All rights reserved. | |
7 * | |
8 * Redistribution and use in source and binary forms, with or without | |
9 * modification, are permitted provided that the following conditions | |
10 * are met: | |
11 * | |
12 * 1. Redistributions of source code must retain the above copyright | |
13 * notice, this list of conditions and the following disclaimer. | |
14 * | |
15 * 2. Redistributions in binary form must reproduce the above copyright | |
16 * notice, this list of conditions and the following disclaimer in | |
17 * the documentation and/or other materials provided with the | |
18 * distribution. | |
19 * | |
20 * 3. All advertising materials mentioning features or use of this | |
21 * software must display the following acknowledgment: | |
22 * "This product includes software developed by the OpenSSL Project | |
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
24 * | |
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
26 * endorse or promote products derived from this software without | |
27 * prior written permission. For written permission, please contact | |
28 * licensing@OpenSSL.org. | |
29 * | |
30 * 5. Products derived from this software may not be called "OpenSSL" | |
31 * nor may "OpenSSL" appear in their names without prior written | |
32 * permission of the OpenSSL Project. | |
33 * | |
34 * 6. Redistributions of any form whatsoever must retain the following | |
35 * acknowledgment: | |
36 * "This product includes software developed by the OpenSSL Project | |
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
38 * | |
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
50 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
51 * ==================================================================== | |
52 * | |
53 * This product includes cryptographic software written by Eric Young | |
54 * (eay@cryptsoft.com). This product includes software written by Tim | |
55 * Hudson (tjh@cryptsoft.com). | |
56 * | |
57 */ | |
58 /* X509 v3 extension utilities */ | |
59 | |
60 | |
61 #include <stdio.h> | |
62 #include <ctype.h> | |
63 #include "cryptlib.h" | |
64 #include <openssl/conf.h> | |
65 #include <openssl/x509v3.h> | |
66 #include <openssl/bn.h> | |
67 | |
68 static char *strip_spaces(char *name); | |
69 static int sk_strcmp(const char * const *a, const char * const *b); | |
70 static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name, GENERAL_NAMES *gens)
; | |
71 static void str_free(OPENSSL_STRING str); | |
72 static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, ASN1_IA5STRING *email); | |
73 | |
74 static int ipv4_from_asc(unsigned char *v4, const char *in); | |
75 static int ipv6_from_asc(unsigned char *v6, const char *in); | |
76 static int ipv6_cb(const char *elem, int len, void *usr); | |
77 static int ipv6_hex(unsigned char *out, const char *in, int inlen); | |
78 | |
79 /* Add a CONF_VALUE name value pair to stack */ | |
80 | |
81 int X509V3_add_value(const char *name, const char *value, | |
82 STACK_OF(CONF_VALUE) **extlist) | |
83 { | |
84 CONF_VALUE *vtmp = NULL; | |
85 char *tname = NULL, *tvalue = NULL; | |
86 if(name && !(tname = BUF_strdup(name))) goto err; | |
87 if(value && !(tvalue = BUF_strdup(value))) goto err; | |
88 if(!(vtmp = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) goto err; | |
89 if(!*extlist && !(*extlist = sk_CONF_VALUE_new_null())) goto err; | |
90 vtmp->section = NULL; | |
91 vtmp->name = tname; | |
92 vtmp->value = tvalue; | |
93 if(!sk_CONF_VALUE_push(*extlist, vtmp)) goto err; | |
94 return 1; | |
95 err: | |
96 X509V3err(X509V3_F_X509V3_ADD_VALUE,ERR_R_MALLOC_FAILURE); | |
97 if(vtmp) OPENSSL_free(vtmp); | |
98 if(tname) OPENSSL_free(tname); | |
99 if(tvalue) OPENSSL_free(tvalue); | |
100 return 0; | |
101 } | |
102 | |
103 int X509V3_add_value_uchar(const char *name, const unsigned char *value, | |
104 STACK_OF(CONF_VALUE) **extlist) | |
105 { | |
106 return X509V3_add_value(name,(const char *)value,extlist); | |
107 } | |
108 | |
109 /* Free function for STACK_OF(CONF_VALUE) */ | |
110 | |
111 void X509V3_conf_free(CONF_VALUE *conf) | |
112 { | |
113 if(!conf) return; | |
114 if(conf->name) OPENSSL_free(conf->name); | |
115 if(conf->value) OPENSSL_free(conf->value); | |
116 if(conf->section) OPENSSL_free(conf->section); | |
117 OPENSSL_free(conf); | |
118 } | |
119 | |
120 int X509V3_add_value_bool(const char *name, int asn1_bool, | |
121 STACK_OF(CONF_VALUE) **extlist) | |
122 { | |
123 if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist); | |
124 return X509V3_add_value(name, "FALSE", extlist); | |
125 } | |
126 | |
127 int X509V3_add_value_bool_nf(char *name, int asn1_bool, | |
128 STACK_OF(CONF_VALUE) **extlist) | |
129 { | |
130 if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist); | |
131 return 1; | |
132 } | |
133 | |
134 | |
135 char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *a) | |
136 { | |
137 BIGNUM *bntmp = NULL; | |
138 char *strtmp = NULL; | |
139 if(!a) return NULL; | |
140 if(!(bntmp = ASN1_ENUMERATED_to_BN(a, NULL)) || | |
141 !(strtmp = BN_bn2dec(bntmp)) ) | |
142 X509V3err(X509V3_F_I2S_ASN1_ENUMERATED,ERR_R_MALLOC_FAILURE); | |
143 BN_free(bntmp); | |
144 return strtmp; | |
145 } | |
146 | |
147 char *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *method, ASN1_INTEGER *a) | |
148 { | |
149 BIGNUM *bntmp = NULL; | |
150 char *strtmp = NULL; | |
151 if(!a) return NULL; | |
152 if(!(bntmp = ASN1_INTEGER_to_BN(a, NULL)) || | |
153 !(strtmp = BN_bn2dec(bntmp)) ) | |
154 X509V3err(X509V3_F_I2S_ASN1_INTEGER,ERR_R_MALLOC_FAILURE); | |
155 BN_free(bntmp); | |
156 return strtmp; | |
157 } | |
158 | |
159 ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value) | |
160 { | |
161 BIGNUM *bn = NULL; | |
162 ASN1_INTEGER *aint; | |
163 int isneg, ishex; | |
164 int ret; | |
165 if (!value) { | |
166 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_INVALID_NULL_VALUE)
; | |
167 return 0; | |
168 } | |
169 bn = BN_new(); | |
170 if (value[0] == '-') { | |
171 value++; | |
172 isneg = 1; | |
173 } else isneg = 0; | |
174 | |
175 if (value[0] == '0' && ((value[1] == 'x') || (value[1] == 'X'))) { | |
176 value += 2; | |
177 ishex = 1; | |
178 } else ishex = 0; | |
179 | |
180 if (ishex) ret = BN_hex2bn(&bn, value); | |
181 else ret = BN_dec2bn(&bn, value); | |
182 | |
183 if (!ret || value[ret]) { | |
184 BN_free(bn); | |
185 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_DEC2BN_ERROR); | |
186 return 0; | |
187 } | |
188 | |
189 if (isneg && BN_is_zero(bn)) isneg = 0; | |
190 | |
191 aint = BN_to_ASN1_INTEGER(bn, NULL); | |
192 BN_free(bn); | |
193 if (!aint) { | |
194 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_TO_ASN1_INTEGER_
ERROR); | |
195 return 0; | |
196 } | |
197 if (isneg) aint->type |= V_ASN1_NEG; | |
198 return aint; | |
199 } | |
200 | |
201 int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint, | |
202 STACK_OF(CONF_VALUE) **extlist) | |
203 { | |
204 char *strtmp; | |
205 int ret; | |
206 if(!aint) return 1; | |
207 if(!(strtmp = i2s_ASN1_INTEGER(NULL, aint))) return 0; | |
208 ret = X509V3_add_value(name, strtmp, extlist); | |
209 OPENSSL_free(strtmp); | |
210 return ret; | |
211 } | |
212 | |
213 int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool) | |
214 { | |
215 char *btmp; | |
216 if(!(btmp = value->value)) goto err; | |
217 if(!strcmp(btmp, "TRUE") || !strcmp(btmp, "true") | |
218 || !strcmp(btmp, "Y") || !strcmp(btmp, "y") | |
219 || !strcmp(btmp, "YES") || !strcmp(btmp, "yes")) { | |
220 *asn1_bool = 0xff; | |
221 return 1; | |
222 } else if(!strcmp(btmp, "FALSE") || !strcmp(btmp, "false") | |
223 || !strcmp(btmp, "N") || !strcmp(btmp, "n") | |
224 || !strcmp(btmp, "NO") || !strcmp(btmp, "no")) { | |
225 *asn1_bool = 0; | |
226 return 1; | |
227 } | |
228 err: | |
229 X509V3err(X509V3_F_X509V3_GET_VALUE_BOOL,X509V3_R_INVALID_BOOLEAN_STRING
); | |
230 X509V3_conf_err(value); | |
231 return 0; | |
232 } | |
233 | |
234 int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint) | |
235 { | |
236 ASN1_INTEGER *itmp; | |
237 if(!(itmp = s2i_ASN1_INTEGER(NULL, value->value))) { | |
238 X509V3_conf_err(value); | |
239 return 0; | |
240 } | |
241 *aint = itmp; | |
242 return 1; | |
243 } | |
244 | |
245 #define HDR_NAME 1 | |
246 #define HDR_VALUE 2 | |
247 | |
248 /*#define DEBUG*/ | |
249 | |
250 STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line) | |
251 { | |
252 char *p, *q, c; | |
253 char *ntmp, *vtmp; | |
254 STACK_OF(CONF_VALUE) *values = NULL; | |
255 char *linebuf; | |
256 int state; | |
257 /* We are going to modify the line so copy it first */ | |
258 linebuf = BUF_strdup(line); | |
259 state = HDR_NAME; | |
260 ntmp = NULL; | |
261 /* Go through all characters */ | |
262 for(p = linebuf, q = linebuf; (c = *p) && (c!='\r') && (c!='\n'); p++) { | |
263 | |
264 switch(state) { | |
265 case HDR_NAME: | |
266 if(c == ':') { | |
267 state = HDR_VALUE; | |
268 *p = 0; | |
269 ntmp = strip_spaces(q); | |
270 if(!ntmp) { | |
271 X509V3err(X509V3_F_X509V3_PARSE_LIST, X5
09V3_R_INVALID_NULL_NAME); | |
272 goto err; | |
273 } | |
274 q = p + 1; | |
275 } else if(c == ',') { | |
276 *p = 0; | |
277 ntmp = strip_spaces(q); | |
278 q = p + 1; | |
279 #if 0 | |
280 printf("%s\n", ntmp); | |
281 #endif | |
282 if(!ntmp) { | |
283 X509V3err(X509V3_F_X509V3_PARSE_LIST, X5
09V3_R_INVALID_NULL_NAME); | |
284 goto err; | |
285 } | |
286 X509V3_add_value(ntmp, NULL, &values); | |
287 } | |
288 break ; | |
289 | |
290 case HDR_VALUE: | |
291 if(c == ',') { | |
292 state = HDR_NAME; | |
293 *p = 0; | |
294 vtmp = strip_spaces(q); | |
295 #if 0 | |
296 printf("%s\n", ntmp); | |
297 #endif | |
298 if(!vtmp) { | |
299 X509V3err(X509V3_F_X509V3_PARSE_LIST, X5
09V3_R_INVALID_NULL_VALUE); | |
300 goto err; | |
301 } | |
302 X509V3_add_value(ntmp, vtmp, &values); | |
303 ntmp = NULL; | |
304 q = p + 1; | |
305 } | |
306 | |
307 } | |
308 } | |
309 | |
310 if(state == HDR_VALUE) { | |
311 vtmp = strip_spaces(q); | |
312 #if 0 | |
313 printf("%s=%s\n", ntmp, vtmp); | |
314 #endif | |
315 if(!vtmp) { | |
316 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_N
ULL_VALUE); | |
317 goto err; | |
318 } | |
319 X509V3_add_value(ntmp, vtmp, &values); | |
320 } else { | |
321 ntmp = strip_spaces(q); | |
322 #if 0 | |
323 printf("%s\n", ntmp); | |
324 #endif | |
325 if(!ntmp) { | |
326 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_N
ULL_NAME); | |
327 goto err; | |
328 } | |
329 X509V3_add_value(ntmp, NULL, &values); | |
330 } | |
331 OPENSSL_free(linebuf); | |
332 return values; | |
333 | |
334 err: | |
335 OPENSSL_free(linebuf); | |
336 sk_CONF_VALUE_pop_free(values, X509V3_conf_free); | |
337 return NULL; | |
338 | |
339 } | |
340 | |
341 /* Delete leading and trailing spaces from a string */ | |
342 static char *strip_spaces(char *name) | |
343 { | |
344 char *p, *q; | |
345 /* Skip over leading spaces */ | |
346 p = name; | |
347 while(*p && isspace((unsigned char)*p)) p++; | |
348 if(!*p) return NULL; | |
349 q = p + strlen(p) - 1; | |
350 while((q != p) && isspace((unsigned char)*q)) q--; | |
351 if(p != q) q[1] = 0; | |
352 if(!*p) return NULL; | |
353 return p; | |
354 } | |
355 | |
356 /* hex string utilities */ | |
357 | |
358 /* Given a buffer of length 'len' return a OPENSSL_malloc'ed string with its | |
359 * hex representation | |
360 * @@@ (Contents of buffer are always kept in ASCII, also on EBCDIC machines) | |
361 */ | |
362 | |
363 char *hex_to_string(const unsigned char *buffer, long len) | |
364 { | |
365 char *tmp, *q; | |
366 const unsigned char *p; | |
367 int i; | |
368 static const char hexdig[] = "0123456789ABCDEF"; | |
369 if(!buffer || !len) return NULL; | |
370 if(!(tmp = OPENSSL_malloc(len * 3 + 1))) { | |
371 X509V3err(X509V3_F_HEX_TO_STRING,ERR_R_MALLOC_FAILURE); | |
372 return NULL; | |
373 } | |
374 q = tmp; | |
375 for(i = 0, p = buffer; i < len; i++,p++) { | |
376 *q++ = hexdig[(*p >> 4) & 0xf]; | |
377 *q++ = hexdig[*p & 0xf]; | |
378 *q++ = ':'; | |
379 } | |
380 q[-1] = 0; | |
381 #ifdef CHARSET_EBCDIC | |
382 ebcdic2ascii(tmp, tmp, q - tmp - 1); | |
383 #endif | |
384 | |
385 return tmp; | |
386 } | |
387 | |
388 /* Give a string of hex digits convert to | |
389 * a buffer | |
390 */ | |
391 | |
392 unsigned char *string_to_hex(const char *str, long *len) | |
393 { | |
394 unsigned char *hexbuf, *q; | |
395 unsigned char ch, cl, *p; | |
396 if(!str) { | |
397 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_INVALID_NULL_ARGUMENT)
; | |
398 return NULL; | |
399 } | |
400 if(!(hexbuf = OPENSSL_malloc(strlen(str) >> 1))) goto err; | |
401 for(p = (unsigned char *)str, q = hexbuf; *p;) { | |
402 ch = *p++; | |
403 #ifdef CHARSET_EBCDIC | |
404 ch = os_toebcdic[ch]; | |
405 #endif | |
406 if(ch == ':') continue; | |
407 cl = *p++; | |
408 #ifdef CHARSET_EBCDIC | |
409 cl = os_toebcdic[cl]; | |
410 #endif | |
411 if(!cl) { | |
412 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ODD_NUMBER_OF_
DIGITS); | |
413 OPENSSL_free(hexbuf); | |
414 return NULL; | |
415 } | |
416 if(isupper(ch)) ch = tolower(ch); | |
417 if(isupper(cl)) cl = tolower(cl); | |
418 | |
419 if((ch >= '0') && (ch <= '9')) ch -= '0'; | |
420 else if ((ch >= 'a') && (ch <= 'f')) ch -= 'a' - 10; | |
421 else goto badhex; | |
422 | |
423 if((cl >= '0') && (cl <= '9')) cl -= '0'; | |
424 else if ((cl >= 'a') && (cl <= 'f')) cl -= 'a' - 10; | |
425 else goto badhex; | |
426 | |
427 *q++ = (ch << 4) | cl; | |
428 } | |
429 | |
430 if(len) *len = q - hexbuf; | |
431 | |
432 return hexbuf; | |
433 | |
434 err: | |
435 if(hexbuf) OPENSSL_free(hexbuf); | |
436 X509V3err(X509V3_F_STRING_TO_HEX,ERR_R_MALLOC_FAILURE); | |
437 return NULL; | |
438 | |
439 badhex: | |
440 OPENSSL_free(hexbuf); | |
441 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ILLEGAL_HEX_DIGIT); | |
442 return NULL; | |
443 | |
444 } | |
445 | |
446 /* V2I name comparison function: returns zero if 'name' matches | |
447 * cmp or cmp.* | |
448 */ | |
449 | |
450 int name_cmp(const char *name, const char *cmp) | |
451 { | |
452 int len, ret; | |
453 char c; | |
454 len = strlen(cmp); | |
455 if((ret = strncmp(name, cmp, len))) return ret; | |
456 c = name[len]; | |
457 if(!c || (c=='.')) return 0; | |
458 return 1; | |
459 } | |
460 | |
461 static int sk_strcmp(const char * const *a, const char * const *b) | |
462 { | |
463 return strcmp(*a, *b); | |
464 } | |
465 | |
466 STACK_OF(OPENSSL_STRING) *X509_get1_email(X509 *x) | |
467 { | |
468 GENERAL_NAMES *gens; | |
469 STACK_OF(OPENSSL_STRING) *ret; | |
470 | |
471 gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL); | |
472 ret = get_email(X509_get_subject_name(x), gens); | |
473 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); | |
474 return ret; | |
475 } | |
476 | |
477 STACK_OF(OPENSSL_STRING) *X509_get1_ocsp(X509 *x) | |
478 { | |
479 AUTHORITY_INFO_ACCESS *info; | |
480 STACK_OF(OPENSSL_STRING) *ret = NULL; | |
481 int i; | |
482 | |
483 info = X509_get_ext_d2i(x, NID_info_access, NULL, NULL); | |
484 if (!info) | |
485 return NULL; | |
486 for (i = 0; i < sk_ACCESS_DESCRIPTION_num(info); i++) | |
487 { | |
488 ACCESS_DESCRIPTION *ad = sk_ACCESS_DESCRIPTION_value(info, i); | |
489 if (OBJ_obj2nid(ad->method) == NID_ad_OCSP) | |
490 { | |
491 if (ad->location->type == GEN_URI) | |
492 { | |
493 if (!append_ia5(&ret, ad->location->d.uniformRes
ourceIdentifier)) | |
494 break; | |
495 } | |
496 } | |
497 } | |
498 AUTHORITY_INFO_ACCESS_free(info); | |
499 return ret; | |
500 } | |
501 | |
502 STACK_OF(OPENSSL_STRING) *X509_REQ_get1_email(X509_REQ *x) | |
503 { | |
504 GENERAL_NAMES *gens; | |
505 STACK_OF(X509_EXTENSION) *exts; | |
506 STACK_OF(OPENSSL_STRING) *ret; | |
507 | |
508 exts = X509_REQ_get_extensions(x); | |
509 gens = X509V3_get_d2i(exts, NID_subject_alt_name, NULL, NULL); | |
510 ret = get_email(X509_REQ_get_subject_name(x), gens); | |
511 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); | |
512 sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free); | |
513 return ret; | |
514 } | |
515 | |
516 | |
517 static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name, GENERAL_NAMES *gens) | |
518 { | |
519 STACK_OF(OPENSSL_STRING) *ret = NULL; | |
520 X509_NAME_ENTRY *ne; | |
521 ASN1_IA5STRING *email; | |
522 GENERAL_NAME *gen; | |
523 int i; | |
524 /* Now add any email address(es) to STACK */ | |
525 i = -1; | |
526 /* First supplied X509_NAME */ | |
527 while((i = X509_NAME_get_index_by_NID(name, | |
528 NID_pkcs9_emailAddress, i)) >= 0) { | |
529 ne = X509_NAME_get_entry(name, i); | |
530 email = X509_NAME_ENTRY_get_data(ne); | |
531 if(!append_ia5(&ret, email)) return NULL; | |
532 } | |
533 for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) | |
534 { | |
535 gen = sk_GENERAL_NAME_value(gens, i); | |
536 if(gen->type != GEN_EMAIL) continue; | |
537 if(!append_ia5(&ret, gen->d.ia5)) return NULL; | |
538 } | |
539 return ret; | |
540 } | |
541 | |
542 static void str_free(OPENSSL_STRING str) | |
543 { | |
544 OPENSSL_free(str); | |
545 } | |
546 | |
547 static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, ASN1_IA5STRING *email) | |
548 { | |
549 char *emtmp; | |
550 /* First some sanity checks */ | |
551 if(email->type != V_ASN1_IA5STRING) return 1; | |
552 if(!email->data || !email->length) return 1; | |
553 if(!*sk) *sk = sk_OPENSSL_STRING_new(sk_strcmp); | |
554 if(!*sk) return 0; | |
555 /* Don't add duplicates */ | |
556 if(sk_OPENSSL_STRING_find(*sk, (char *)email->data) != -1) return 1; | |
557 emtmp = BUF_strdup((char *)email->data); | |
558 if(!emtmp || !sk_OPENSSL_STRING_push(*sk, emtmp)) { | |
559 X509_email_free(*sk); | |
560 *sk = NULL; | |
561 return 0; | |
562 } | |
563 return 1; | |
564 } | |
565 | |
566 void X509_email_free(STACK_OF(OPENSSL_STRING) *sk) | |
567 { | |
568 sk_OPENSSL_STRING_pop_free(sk, str_free); | |
569 } | |
570 | |
571 /* Convert IP addresses both IPv4 and IPv6 into an | |
572 * OCTET STRING compatible with RFC3280. | |
573 */ | |
574 | |
575 ASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc) | |
576 { | |
577 unsigned char ipout[16]; | |
578 ASN1_OCTET_STRING *ret; | |
579 int iplen; | |
580 | |
581 /* If string contains a ':' assume IPv6 */ | |
582 | |
583 iplen = a2i_ipadd(ipout, ipasc); | |
584 | |
585 if (!iplen) | |
586 return NULL; | |
587 | |
588 ret = ASN1_OCTET_STRING_new(); | |
589 if (!ret) | |
590 return NULL; | |
591 if (!ASN1_OCTET_STRING_set(ret, ipout, iplen)) | |
592 { | |
593 ASN1_OCTET_STRING_free(ret); | |
594 return NULL; | |
595 } | |
596 return ret; | |
597 } | |
598 | |
599 ASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc) | |
600 { | |
601 ASN1_OCTET_STRING *ret = NULL; | |
602 unsigned char ipout[32]; | |
603 char *iptmp = NULL, *p; | |
604 int iplen1, iplen2; | |
605 p = strchr(ipasc,'/'); | |
606 if (!p) | |
607 return NULL; | |
608 iptmp = BUF_strdup(ipasc); | |
609 if (!iptmp) | |
610 return NULL; | |
611 p = iptmp + (p - ipasc); | |
612 *p++ = 0; | |
613 | |
614 iplen1 = a2i_ipadd(ipout, iptmp); | |
615 | |
616 if (!iplen1) | |
617 goto err; | |
618 | |
619 iplen2 = a2i_ipadd(ipout + iplen1, p); | |
620 | |
621 OPENSSL_free(iptmp); | |
622 iptmp = NULL; | |
623 | |
624 if (!iplen2 || (iplen1 != iplen2)) | |
625 goto err; | |
626 | |
627 ret = ASN1_OCTET_STRING_new(); | |
628 if (!ret) | |
629 goto err; | |
630 if (!ASN1_OCTET_STRING_set(ret, ipout, iplen1 + iplen2)) | |
631 goto err; | |
632 | |
633 return ret; | |
634 | |
635 err: | |
636 if (iptmp) | |
637 OPENSSL_free(iptmp); | |
638 if (ret) | |
639 ASN1_OCTET_STRING_free(ret); | |
640 return NULL; | |
641 } | |
642 | |
643 | |
644 int a2i_ipadd(unsigned char *ipout, const char *ipasc) | |
645 { | |
646 /* If string contains a ':' assume IPv6 */ | |
647 | |
648 if (strchr(ipasc, ':')) | |
649 { | |
650 if (!ipv6_from_asc(ipout, ipasc)) | |
651 return 0; | |
652 return 16; | |
653 } | |
654 else | |
655 { | |
656 if (!ipv4_from_asc(ipout, ipasc)) | |
657 return 0; | |
658 return 4; | |
659 } | |
660 } | |
661 | |
662 static int ipv4_from_asc(unsigned char *v4, const char *in) | |
663 { | |
664 int a0, a1, a2, a3; | |
665 if (sscanf(in, "%d.%d.%d.%d", &a0, &a1, &a2, &a3) != 4) | |
666 return 0; | |
667 if ((a0 < 0) || (a0 > 255) || (a1 < 0) || (a1 > 255) | |
668 || (a2 < 0) || (a2 > 255) || (a3 < 0) || (a3 > 255)) | |
669 return 0; | |
670 v4[0] = a0; | |
671 v4[1] = a1; | |
672 v4[2] = a2; | |
673 v4[3] = a3; | |
674 return 1; | |
675 } | |
676 | |
677 typedef struct { | |
678 /* Temporary store for IPV6 output */ | |
679 unsigned char tmp[16]; | |
680 /* Total number of bytes in tmp */ | |
681 int total; | |
682 /* The position of a zero (corresponding to '::') */ | |
683 int zero_pos; | |
684 /* Number of zeroes */ | |
685 int zero_cnt; | |
686 } IPV6_STAT; | |
687 | |
688 | |
689 static int ipv6_from_asc(unsigned char *v6, const char *in) | |
690 { | |
691 IPV6_STAT v6stat; | |
692 v6stat.total = 0; | |
693 v6stat.zero_pos = -1; | |
694 v6stat.zero_cnt = 0; | |
695 /* Treat the IPv6 representation as a list of values | |
696 * separated by ':'. The presence of a '::' will parse | |
697 * as one, two or three zero length elements. | |
698 */ | |
699 if (!CONF_parse_list(in, ':', 0, ipv6_cb, &v6stat)) | |
700 return 0; | |
701 | |
702 /* Now for some sanity checks */ | |
703 | |
704 if (v6stat.zero_pos == -1) | |
705 { | |
706 /* If no '::' must have exactly 16 bytes */ | |
707 if (v6stat.total != 16) | |
708 return 0; | |
709 } | |
710 else | |
711 { | |
712 /* If '::' must have less than 16 bytes */ | |
713 if (v6stat.total == 16) | |
714 return 0; | |
715 /* More than three zeroes is an error */ | |
716 if (v6stat.zero_cnt > 3) | |
717 return 0; | |
718 /* Can only have three zeroes if nothing else present */ | |
719 else if (v6stat.zero_cnt == 3) | |
720 { | |
721 if (v6stat.total > 0) | |
722 return 0; | |
723 } | |
724 /* Can only have two zeroes if at start or end */ | |
725 else if (v6stat.zero_cnt == 2) | |
726 { | |
727 if ((v6stat.zero_pos != 0) | |
728 && (v6stat.zero_pos != v6stat.total)) | |
729 return 0; | |
730 } | |
731 else | |
732 /* Can only have one zero if *not* start or end */ | |
733 { | |
734 if ((v6stat.zero_pos == 0) | |
735 || (v6stat.zero_pos == v6stat.total)) | |
736 return 0; | |
737 } | |
738 } | |
739 | |
740 /* Format result */ | |
741 | |
742 if (v6stat.zero_pos >= 0) | |
743 { | |
744 /* Copy initial part */ | |
745 memcpy(v6, v6stat.tmp, v6stat.zero_pos); | |
746 /* Zero middle */ | |
747 memset(v6 + v6stat.zero_pos, 0, 16 - v6stat.total); | |
748 /* Copy final part */ | |
749 if (v6stat.total != v6stat.zero_pos) | |
750 memcpy(v6 + v6stat.zero_pos + 16 - v6stat.total, | |
751 v6stat.tmp + v6stat.zero_pos, | |
752 v6stat.total - v6stat.zero_pos); | |
753 } | |
754 else | |
755 memcpy(v6, v6stat.tmp, 16); | |
756 | |
757 return 1; | |
758 } | |
759 | |
760 static int ipv6_cb(const char *elem, int len, void *usr) | |
761 { | |
762 IPV6_STAT *s = usr; | |
763 /* Error if 16 bytes written */ | |
764 if (s->total == 16) | |
765 return 0; | |
766 if (len == 0) | |
767 { | |
768 /* Zero length element, corresponds to '::' */ | |
769 if (s->zero_pos == -1) | |
770 s->zero_pos = s->total; | |
771 /* If we've already got a :: its an error */ | |
772 else if (s->zero_pos != s->total) | |
773 return 0; | |
774 s->zero_cnt++; | |
775 } | |
776 else | |
777 { | |
778 /* If more than 4 characters could be final a.b.c.d form */ | |
779 if (len > 4) | |
780 { | |
781 /* Need at least 4 bytes left */ | |
782 if (s->total > 12) | |
783 return 0; | |
784 /* Must be end of string */ | |
785 if (elem[len]) | |
786 return 0; | |
787 if (!ipv4_from_asc(s->tmp + s->total, elem)) | |
788 return 0; | |
789 s->total += 4; | |
790 } | |
791 else | |
792 { | |
793 if (!ipv6_hex(s->tmp + s->total, elem, len)) | |
794 return 0; | |
795 s->total += 2; | |
796 } | |
797 } | |
798 return 1; | |
799 } | |
800 | |
801 /* Convert a string of up to 4 hex digits into the corresponding | |
802 * IPv6 form. | |
803 */ | |
804 | |
805 static int ipv6_hex(unsigned char *out, const char *in, int inlen) | |
806 { | |
807 unsigned char c; | |
808 unsigned int num = 0; | |
809 if (inlen > 4) | |
810 return 0; | |
811 while(inlen--) | |
812 { | |
813 c = *in++; | |
814 num <<= 4; | |
815 if ((c >= '0') && (c <= '9')) | |
816 num |= c - '0'; | |
817 else if ((c >= 'A') && (c <= 'F')) | |
818 num |= c - 'A' + 10; | |
819 else if ((c >= 'a') && (c <= 'f')) | |
820 num |= c - 'a' + 10; | |
821 else | |
822 return 0; | |
823 } | |
824 out[0] = num >> 8; | |
825 out[1] = num & 0xff; | |
826 return 1; | |
827 } | |
828 | |
829 | |
830 int X509V3_NAME_from_section(X509_NAME *nm, STACK_OF(CONF_VALUE)*dn_sk, | |
831 unsigned long chtype) | |
832 { | |
833 CONF_VALUE *v; | |
834 int i, mval; | |
835 char *p, *type; | |
836 if (!nm) | |
837 return 0; | |
838 | |
839 for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++) | |
840 { | |
841 v=sk_CONF_VALUE_value(dn_sk,i); | |
842 type=v->name; | |
843 /* Skip past any leading X. X: X, etc to allow for | |
844 * multiple instances | |
845 */ | |
846 for(p = type; *p ; p++) | |
847 #ifndef CHARSET_EBCDIC | |
848 if ((*p == ':') || (*p == ',') || (*p == '.')) | |
849 #else | |
850 if ((*p == os_toascii[':']) || (*p == os_toascii[',']) |
| (*p == os_toascii['.'])) | |
851 #endif | |
852 { | |
853 p++; | |
854 if(*p) type = p; | |
855 break; | |
856 } | |
857 #ifndef CHARSET_EBCDIC | |
858 if (*type == '+') | |
859 #else | |
860 if (*type == os_toascii['+']) | |
861 #endif | |
862 { | |
863 mval = -1; | |
864 type++; | |
865 } | |
866 else | |
867 mval = 0; | |
868 if (!X509_NAME_add_entry_by_txt(nm,type, chtype, | |
869 (unsigned char *) v->value,-1,-1,mval)) | |
870 return 0; | |
871 | |
872 } | |
873 return 1; | |
874 } | |
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